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mfd: arizona: Support configuring MICBIASes into bypass mode 

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
hifive-unleashed-5.1
Mark Brown 2013-01-29 18:44:41 +08:00 committed by Samuel Ortiz
parent 22c75fe7c7
commit 544c7aadd7
2 changed files with 12 additions and 1 deletions
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12
drivers/mfd/arizona-core.c
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@ -514,10 +514,16 @@ int arizona_dev_init(struct arizona *arizona)
}
for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
if (!arizona->pdata.micbias[i].mV)
if (!arizona->pdata.micbias[i].mV &&
!arizona->pdata.micbias[i].bypass)
continue;
/* Apply default for bypass mode */
if (!arizona->pdata.micbias[i].mV)
arizona->pdata.micbias[i].mV = 2800;
val = (arizona->pdata.micbias[i].mV - 1500) / 100;
val <<= ARIZONA_MICB1_LVL_SHIFT;
if (arizona->pdata.micbias[i].ext_cap)
@ -529,10 +535,14 @@ int arizona_dev_init(struct arizona *arizona)
if (arizona->pdata.micbias[i].fast_start)
val |= ARIZONA_MICB1_RATE;
if (arizona->pdata.micbias[i].bypass)
val |= ARIZONA_MICB1_BYPASS;
regmap_update_bits(arizona->regmap,
ARIZONA_MIC_BIAS_CTRL_1 + i,
ARIZONA_MICB1_LVL_MASK |
ARIZONA_MICB1_DISCH |
ARIZONA_MICB1_BYPASS |
ARIZONA_MICB1_RATE, val);
}

1
include/linux/mfd/arizona/pdata.h
View File

@ -78,6 +78,7 @@ struct arizona_micbias {
unsigned int ext_cap:1; /** External capacitor fitted */
unsigned int discharge:1; /** Actively discharge */
unsigned int fast_start:1; /** Enable aggressive startup ramp rate */
unsigned int bypass:1; /** Use bypass mode */
};
struct arizona_micd_config {